Adjusting and locking device.



PATENTED JULY 7, 1908.

P. H. RICHARDS.

ADJUSTING AND LOCKING DEVICE.

APPLICATION FILED MAY 24.1901.

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W messes:-

FRANCIS H. RICHARDS, 'OF HARTFORD, CONNECTICUT.

ADJUSTING AND Locmne DEVICE.

Specification of Letters Patent.

Patented July 7, 1908.

Application filed May 24, 1901. Serial No. 61,703.

i To all whom it may concem:

Be it known that I, FRANCIS H. RICHARDS, a citizen of the United States, residing at Hartford, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements -in Ad'usting and Looking Devices, of which the f0 owing is a specification.

The invention relates to combined adjusting and locking devices, and has for its object the provislon of means for adjusting a machine element to a precise rotarial position, in which position it may be held or locked against displacement.

My invention includes as one of its features a lurality of rotative members or actuators or imparting movement to and also for holding a rotatable member, each actuator serving not only as a means for effecting the rotaria adjustment of the machine element but also 1n cooperation with other actuators to effectually lock the parts in the position to which they may have been ad usted. 1

The invention is shown applied in the resent drawing to an eccentric, it beinga apted, as illustrated herein, for shifting the angular position of the eccentric with relation to the shaft upon which it is mounted. It will, of course, be understood, however, that this particular machine element is illustrative only of an application of the device, which, in general, is adapted, as before stated, for obtaining a rotarial adusting movement of a part or element and e ectingv the locki thereof in a definite position.

In thefiawing, Figure 1 is a artly elevational, partly sectional view of t e device as applied to an eccentric, the section bei ta on through the hub of the eccentric an showing the actuators in position. Fig. 2 is a sectional view on the hne 2-2 of Fi .1. Fig. 3 is partly an elevational and part y a sectional view of the eccentric, the section being similar to that of Fig. 1, while in the re the actuators and various other assoclatediparts are removed. Fi 4 is a sectional view on the line 44 of Flg. 3. Fig. 5 is an end view of a part for cooperating with the actuators embraced im-the device this part being shown as a sleeve rotarially of which the eccentric may turn during its ad 'justment. Fig. 6 is'a side elevation of this part; and Fig. '7 is a view of one of the actuators employed in the device.

Similar characters of reference corresponding parts in all figures.

The member, desi nated in a general way in the present speci cation and drawing by B and whose rotarial ad'ustment the present designate device is designed to e act, is herein shown as an eccentric whose operating shaft is designated by b. This eccentric is provided with the usual eccentric-strap b which, as a result of the rotation of-the eccentric, is re-.

ciprocated in the well-known manner.

The present invention is adapted to effect, as before stated, the angular adjustment of this eccentric or. member B with reference to the shaft 1), and the actuating means for the purpose embodies, in general, a series of engaging and 006 erative shoulders which are preferably spira ly arranged with relation to each other, whereby a rotation of the actuator results in a turning or rotating movement of the member whose shoulders engage with those of the actuator. For the purpose of locking the parts in a definite position I have provided two actuators which are adapted to rotate the member in op osite directions. The (parts are so organize that rotation of the a justable member in either direction by the rotation of one actuator.

serves through the operation of 'the said shoulders to move the 1dle actuator to a'position in which its movement is checked and frictionally prevented with a restraining force increasing in proportion as the first actuator is operated. his checking movement of each actuator also reacts upon the other, resulting in the movement of the manipulated actuator likewise to a position in which its rotation is checked.

As organized in the present construction,

,the shaft 1) is provided with a fixed sleeve 2 keyed or otherwise secured to the operating shaft. At one end this sleeve 2 is provided with a flange 2, while on this sleeve the ec centric is mounted to rotate. The shoulders herein referred to are formed inart upon this sleeve, being herein shown in t e form of thread sections 3 formed in the exterior surface of the sleeve, whilethe actuators consist of screws 4 located in appropriate sockets 4 in the hub of the eccentric in such ositions 'asto permit the shoulders formed y their threads 4 to engage with the shoulders of l which said actuator islocated and the. otherthread sections 3. Each screw 4 is shown as provided with a cross-slot 4" in its head for direction tending to urge it inward toward the bottom of its socket the resulting movementof the shaft will be'in opposite directions for the two screws. Each screw in the resent instance is adapted to engage with a iction surface, each screw being here shown as provided with a conical portion 5 at its end which engages with a corresponding recess 5 at the bottom of the socket. Upon the examination of Fig. -1, it is evident that upon turning each screw in the aforesaid direction the tendency is to force'the opposite screw into firmer engagement with its socket, the

result being that the engaging friction surfaces serve to effectually check and hold the screw not only from longitudinal but also from angular movement.

same axially upon the relatively-fixed shoul' ders 3 carrying this screw likewise into firm frictional contact with its socket. Of course, instead of forming the shoulders 3 upon a separate member they may be formed directly u on the shaft itself. The present device a ords, therefore, means for securing the rotarial adjustment of a part or element whereby the angularity thereof with refer. ence to its shaft, etc. may be altered, while by the continued manipulation of either or both actuators when in osition theparts are firmly fastened and he (1 in their adjusted position. I

In my copending application for adjusting devices, Serial'No. 13,867, filed Apr-i123,- 1900, there is claimed a structure which is disclosed to a certain extent in the present application; namely, a 'pair of members one 0 which is rotatably mounted in the other, the rotary member being provided with a worm, and a pair of screws carried by sockets in the otherand engaging the worm for effecting rotary adjustment of said member.

Having described my invention, I claim 1. The combination with a pair of members one of whichis an eccentric adjustable relatively to the other, of an actuator for effecting such adjustment, one of the said members having a smooth-walledsocket in which said actuator is located and the other member having shoulders engaging shoulders on the actuator; and a device operatively connected with the said member on which Further rotation -of the manipulated screw now moves the member having shoulders engaging shoulders on the actuator; and a device operatively connected with the said member on which the shoulders are formed and which moves toward a locking position when the actuator is operated, said device having a friction part which is shifted into its engaging position when the device moves to its locking position.

' 3. The combination with a pair of members one ofwhich is an eccentric angularly adjustable in both directions relatively to'the other member, of apair of actuators severally for efiecting suchv respective adjustments, one of the said members having a air of sockets in which said actuators are ocated and the other'member havingshoulders-em gaging with shoulders on the actuators; and said actuators having friction parts adapted to seat themselves in cavitiesconnecting with the respective sockets.

' 4. The combination with a pair of members one of which is an eccentric rotatably mounted on the other, of a pair QfscrcWs-erigaging with a worm formed on the said other member for effecting the rotary adjustment of the eccentric, said screws being located in sockets formed in the eccentric.

5. The combination with a pair of mem-, bers one of which is an-eccentric rotatably mounted on the other, of a pair of scrQWS each having a tapering end part and-engag ing with a worm fo'rnied upon-the said other member for effecting the; rotary adjustment of the eccentric, sald' screws being located in sockets formed in theleccentjricfind-bfeing. :adapted to seat themselves in tapering'cave ities formed at the bottomsof said-is'bckefise 6. The combination with' a pair of-meinbers one of which is an eccentric angularly adjustable in both directions relative to the other member, ofa pair of screw-like actuators severally forfeflecting-such respective adjustments, said actuator being ada ted to engage with shoulders uponone of Lt esaid members and being longitudinallygshiftable with respect to the other of said member's .5.

7. The combination with-an eccentric,'of a shaft, having a worm formed on its periphery and a pair of screws disposedon op:

posite sides ofsaid shaft and having tapering end portions, said screws being seated in sockets formedin the hub portion of-tthe eccentric and engaging with the worm upon said shaft.

8. The combination with a air of members one movable within the ot er, of means carried by each member cooperating to effect an adjustment of the two members, and the adjusting means being fashioned to friction. ally lock the adjustment. p9; The combination with a shaft, of asleeve' mounted thereon and having a worm formed o'n'its periphery, and a pair of screws disposed on opposite sides of said sleeve and having tapering end portions seated in sockets shaft and provided at their bottoms with formed in a portion of one of said members tapering recesses, and a screw having a taper- 10 and engaging with the Worm upon said ed end seated in each of said sockets.

sleeve.

10. The combination with a shaft having FRANCIS RICHARDS worm teeth formed on its erimeter, of an Witnesses: eccentric mounted upon sai shaft and hav- FRED. J. DOLE,

ing sockets disposed on opposite sides of said CHARLES E. Voss. 

